PLEASE HELP WITH EXPLINATION ;( according to the reaction Zn + 2HCl ⇒ZnCl2 +H2
what is the produced volume of hydrogen gas when 12.04x10^23 atoms of zinc reacts with excess of the acids ?L
A. 22.4 B.44.8 C.11.35 D.68.1

44.8L

Explanation:

Given parameters:

Number of atoms of hydrogen gas  = 12.04 x 10²³atoms

Unknown:

Volume of hydrogen gas  = ?

Solution:

To solve this problem, we are going to consider that this reaction is taking place at STP which is the standard, temperature and pressure.

At STP, 1 mole of gas occupies a volume of 22.4dm³;

First,

  convert the number of atoms to number of moles;

          6.02 x 10²³ atoms can be found in 1 mole of a substance;

         12.04 x 10²³ atoms will contain   = 2moles of H₂

Secondly;

             Since  1 mole of a gas occupies 22.4L at STP;

                        2 moles of H₂ will occupy 2 x 22.4L  = 44.8L

- lead + phosphoric acid = hydrogen + lead(ii) phosphate